Skip to main content

fx - a functional programming approach

Project description

 ___
|  _|_ _
|  _|_'_|
|_| |_,_|igher-order function coding.

Introduction

TL;DR - YAGNI.

Inspired by Haskell’s rich set of operators, this is an approach to functional programming with operators in Python.

“It’s fun… It’s insane… It’s insanely fun.”

—John Doe

Features

  • Currying functions with <<, &

  • Piping output of functions with |

  • Composing functions with **

  • Flipping order of arguments of function with ~

  • and more

Examples

>>> from fx import f
>>> double_all = f(map) << 2 .__mul__ | list
>>> double_all([1, 2, 3])
[2, 4, 6]
>>> double_all |= f(map) << str | ' '.join
>>> double_all([1, 2, 3])
'2 4 6'
>>> sum_upto = 1 .__add__ | f(range) << 1 | sum
>>> sum_upto(100)
5050
>>> parse_hex_str = ~f(int) << 16
>>> parse_hex_str('ff')
255
>>> parse_hex_str('c0ffee')
12648430
>>> # project euler problem 1
>>> euler_p1 = f(range) << 1 | f(filter) << (lambda n: n % 3 == 0 or n % 5 == 0) | sum
>>> euler_p1(10)
23
>>> euler_p1(1000)
233168
>>> # project euler problem 20
>>> fact = f(lambda n: 1 if n == 1 else n * fact(n - 1))
>>> euler_p20 = str ** fact | sum ** f(map) << int
>>> euler_p20(10)
27
>>> euler_p20(100)
648

Requirements

  • CPython >= 2.6

Installation

Install from PyPI:

pip install fx

Install from source, download source package, decompress, then cd into source directory, run:

make install

License

BSD New, see LICENSE for details.

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

fx-0.3.tar.gz (19.3 kB view details)

Uploaded Source

File details

Details for the file fx-0.3.tar.gz.

File metadata

  • Download URL: fx-0.3.tar.gz
  • Upload date:
  • Size: 19.3 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? No

File hashes

Hashes for fx-0.3.tar.gz
Algorithm Hash digest
SHA256 4fcdcae90e42c7f9eeb4233522fff4c6b50639075da4a0faed0c5b300dd11bcc
MD5 54e06fc1c659328523a299ea3993a077
BLAKE2b-256 9a8903dd35e498c7f9d8e95ba2da6382da5cd825863cc972b4f7cb56921f1ff9

See more details on using hashes here.

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page